President Pratibha Patil talks to Army Chief Gen V K Singh as Defence Minister A K Antony looks on during the exercise 'Sudarshan Shakti' at Bugundi battle field near Barmer in Rajasthan. (PTI/Manvender Vashist)

President Pratibha Patil talks to Army Chief Gen V K Singh as Defence Minister A K Antony looks on during the exercise 'Sudarshan Shakti' at Bugundi battle field near Barmer in Rajasthan. (PTI/Manvender Vashist)